Pi's male headers are a bit unpractical for using with breadboard, in my opinion. I use Arduino and breadboard, so I use male jumpers most of the time. With Pi I need to use male-to-female jumpers.
I looked around for a solution, but I found only stuff like this: http://www.dx.com/p/solderless-400-point-breadboard-40pin-cable-40pin-gpio-for-raspberry-pi-b-359063 which is also unpractical, in my opinion.
I think a simple male-to-female adapter is the best choice.
Things that you will need:
- 2x forty pin dual line female headers.
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Step 1: Soldering
You shoudn't solder two pins longer that a few seconds, because you can melt plastic inside the headers.
After soldering, make sure that there are no short-circuited pins.
Step 2: Labels
Another advantage of female headers is that they can be labeled. I made a labels in the GIMP (http://www.gimp.org/) (see XCF attachment)
Print the PDF (see PDF attachment) on A4 paper format without scaling.
Cut printed labels and glue them on the headers.
I have no color printer, so I made coloring with color pencils. But you can make labels as you like...
And that's all.